<?php
/**
 * @package KiraBackup
 * @license GPL-2.0-or-later
 */

if (! defined('ABSPATH')) {
	exit;
}

require_once WPCBR_PLUGIN_DIR . 'includes/class-wpcbr-recovery-gate.php';
require_once WPCBR_PLUGIN_DIR . 'includes/class-wpcbr-recovery-inventory.php';
require_once WPCBR_PLUGIN_DIR . 'includes/class-wpcbr-recovery.php';
require_once WPCBR_PLUGIN_DIR . 'includes/class-wpcbr-migration-helper.php';
require_once WPCBR_PLUGIN_DIR . 'includes/class-wpcbr-backup-service.php';
require_once WPCBR_PLUGIN_DIR . 'includes/class-wpcbr-restore-service.php';
require_once WPCBR_PLUGIN_DIR . 'includes/class-wpcbr-job-service.php';
require_once WPCBR_PLUGIN_DIR . 'includes/class-wpcbr-admin-page.php';

class WPCBR_Plugin {
	/**
	 * @var WPCBR_Plugin|null
	 */
	private static $instance = null;

	/**
	 * @var WPCBR_Backup_Service
	 */
	private $backup_service;

	/**
	 * @var WPCBR_Restore_Service
	 */
	private $restore_service;

	/**
	 * @var WPCBR_Job_Service
	 */
	private $job_service;

	/**
	 * @var WPCBR_Admin_Page
	 */
	private $admin_page;

	public static function instance(): WPCBR_Plugin {
		if (null === self::$instance) {
			self::$instance = new self();
		}

		return self::$instance;
	}

	private function __construct() {
		$this->backup_service  = new WPCBR_Backup_Service();
		$this->restore_service = new WPCBR_Restore_Service();
		$this->job_service     = new WPCBR_Job_Service($this->backup_service, $this->restore_service);
		$this->admin_page      = new WPCBR_Admin_Page($this->backup_service, $this->restore_service, $this->job_service);

		add_action('admin_menu', array($this->admin_page, 'register_menu'));
		add_action('admin_enqueue_scripts', array($this->admin_page, 'enqueue_assets'));
		add_action('admin_post_wpcbr_create_backup', array($this->admin_page, 'handle_backup_request'));
		add_action('admin_post_wpcbr_delete_backup', array($this->admin_page, 'handle_delete_request'));
		add_action('admin_post_wpcbr_download_backup', array($this->admin_page, 'handle_download_request'));
		add_action('admin_post_wpcbr_fix_upload_limit', array($this->admin_page, 'handle_fix_upload_limit'));
		add_action('admin_post_wpcbr_inspect_backup', array($this->admin_page, 'handle_inspect_request'));
		add_action('admin_post_wpcbr_restore_backup', array($this->admin_page, 'handle_restore_request'));
		add_action('admin_post_wpcbr_rollback_restore', array($this->admin_page, 'handle_rollback_request'));
		add_action('admin_post_wpcbr_discard_rollback', array($this->admin_page, 'handle_discard_rollback_request'));
		add_action('admin_post_wpcbr_discard_imported', array($this->admin_page, 'handle_discard_imported_request'));
		add_action('admin_post_wpcbr_drop_db_copy', array($this->admin_page, 'handle_drop_db_copy_request'));
		add_action('admin_post_wpcbr_mark_copy', array($this->admin_page, 'handle_mark_copy_request'));
		add_action('admin_post_wpcbr_stage_server_file', array($this->admin_page, 'handle_stage_server_file'));
		add_action('admin_post_wpcbr_save_settings', array($this->admin_page, 'handle_save_settings'));
		add_action('admin_post_wpcbr_confirm_restore', array($this->admin_page, 'handle_confirm_restore_request'));

		// The recovery watcher (mu-plugin) normally does this before any plugin loads; run it
		// here too in case the watcher file was removed while a restore is open.
		add_action('plugins_loaded', array('WPCBR_Recovery', 'watch'), 0);

		// Chunked (AJAX-driven) export/import job endpoints.
		add_action('wp_ajax_wpcbr_export_start', array($this->admin_page, 'handle_export_start'));
		add_action('wp_ajax_wpcbr_export_tick', array($this->admin_page, 'handle_export_tick'));
		add_action('wp_ajax_wpcbr_import_start', array($this->admin_page, 'handle_import_start'));
		add_action('wp_ajax_wpcbr_import_tick', array($this->admin_page, 'handle_import_tick'));
		add_action('wp_ajax_wpcbr_upload_part', array($this->admin_page, 'handle_upload_part'));
		add_action('wp_ajax_wpcbr_upload_status', array($this->admin_page, 'handle_upload_status'));
		add_action('wp_ajax_wpcbr_assemble_parts', array($this->admin_page, 'handle_assemble_parts'));
		add_action('wp_ajax_wpcbr_job_status', array($this->admin_page, 'handle_job_status'));
		add_action('wp_ajax_wpcbr_job_cancel', array($this->admin_page, 'handle_job_cancel'));
	}
}